28803280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:556

約数の個数: 80

約数和(自身を含む): 74245248

約数和(自身を除く): 45441968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 461, 568, 710, 781, 880, 922, 1136, 1420, 1562, 1844, 2305, 2840, 3124, 3688, 3905, 4610, 5071, 5680, 6248, 7376, 7810, 9220, 10142, 12496, 15620, 18440, 20284, 25355, 31240, 32731, 36880, 40568, 50710, 62480, 65462, 81136, 101420, 130924, 163655, 202840, 261848, 327310, 360041, 405680, 523696, 654620, 720082, 1309240, 1440164, 1800205, 2618480, 2880328, 3600410, 5760656, 7200820, 14401640, 28803280]

約数ペア:

[(1, 28803280), (2, 14401640), (4, 7200820), (5, 5760656), (8, 3600410), (10, 2880328), (11, 2618480), (16, 1800205), (20, 1440164), (22, 1309240), (40, 720082), (44, 654620), (55, 523696), (71, 405680), (80, 360041), (88, 327310), (110, 261848), (142, 202840), (176, 163655), (220, 130924), (284, 101420), (355, 81136), (440, 65462), (461, 62480), (568, 50710), (710, 40568), (781, 36880), (880, 32731), (922, 31240), (1136, 25355), (1420, 20284), (1562, 18440), (1844, 15620), (2305, 12496), (2840, 10142), (3124, 9220), (3688, 7810), (3905, 7376), (4610, 6248), (5071, 5680)]